Extensible electric conductor



y 1935- K. HERKENBERG 2,002,739

EXTENSIBLE ELECTRIC CONDUCTOR.

Filed Dec. 11, 1931 I Patented M., 28, 1935 2,002,739

UNITED STATES PATENT OFFIQE EXTENSIBLE ELECTRIC CONDUCTOR Karl Herkenberg, Oberbarmen-Heckinghausen, Germany Application December 11, 1931, Serial No. 580,385 In Germany December 5, 1930 2 Claims. (GIL 173-264) My invention relates to a conductor of electric- The conductors can be separately connected to ity, capable 01. being extended longitudinally to manifold cords by a number of contacts. increase its usefulness and improve its appli- Having thus described my inventmn, what I cability especially to movable electric apparatus. 01541111181 The conductor md the mthod for production 1. A longitudinally expansible electric conduc- 5 or the extensible electric conductor is mpresent tor comprising a core of elastic material and con- 5 ed m the mm ductor elements loosely braided around said can core, each of said elements comprising an ing z zfi gzg ggfiaf 22 2; 22:3 33 sulating thread and a flat metallic band spirally 0 around and serve to cover a nonconducting core wound around the mSUJPtmg thread 10 b or rubber or other stubble material Each of 2. A flexible longltudmally expansible electric h strands consists of I an metallic b'and c for conductor cord consisting of an extensible rubber core and conductor elements loosely braided instance of silver, which is wound around an inaround said core, each of said conductor elesulating thread :2, made of silk or other 5111 ments comprising a flexible fibrous thread and a 15 material- The braided confluctor e flat metallic band helically wound around said 15 y a b ar c v 1, co sis in of an Insulation thread, the-conductive covering formed by said thread, 11 instance I 111!, Whifih as here conductor elements around said rubber core being shown is covered by a similar cover a, which is surrounded by an extensible insulating casing covered by the outside covering it. The insulamade of threads.

20 tion covering may be formed of rubber tubes. KARL HERKENBERG. 20 

